Wisconsin

Patent attorneys in Wisconsin

Wisconsin hosts 724 active patent practitioners registered with the USPTO Office of Enrollment and Discipline. Patent attorneys and patent agents can both prepare and file patent applications, but only patent attorneys can also offer legal advice on prosecution strategy, freedom-to-operate analyses, and infringement opinions in Wisconsin. Practitioners are concentrated across 20 cities, with the largest clusters in the metros listed below. Notable firms with multiple registered practitioners in the state include Andrus Intellectual Property Law, LLP, Michael Best & Friedrich LLP, and Foley & Lardner LLP.

Top cities in Wisconsin

Milwaukee287 Madison145 Neenah30 Waukesha22 Middleton22 Brookfield18 Wauwatosa17 Racine17 Appleton9 Hudson8 Hartland6 Mequon5 Elm Grove5 Germantown4 Oshkosh4 Eau Claire3 Waunakee3 Verona3 Shorewood3 La Crosse3

All practitioners in Wisconsin

James P O'Shaughnessy

Reg. 27667

Patent attorney

Donges Bay Group, LLC

Mequon, WI · 53092

262-573-0252

Daniel P. Ochoa

Reg. 76555

Patent agent

Andrus Intellectual Property Law, LLP

Milwaukee, WI · 53202

414-271-7590

Erin R Ogden

Reg. 55507

Patent attorney

OgdenGlazer, LLC

Madison, WI · 53744

608-561-2424

Kenneth D Ohm

Reg. 19231

Patent attorney

Amery, WI · 54001

715-268-8623

Aaron T Olejniczak

Reg. 54853

Patent attorney

Andrus Intellectual Property Law, LLP

Milwaukee, WI · 53202

414-271-7590

Christopher P Olson

Reg. 53412

Patent agent

Neenah, WI · 54956

920-915-1253

Laura J Opperman

Reg. 73159

Patent agent

Michael Best &Friedrich LLP

Madison, WI · 53703-4257

608-257-3501

Samuel J Orke

Reg. 78165

Patent agent

Quarles and Brady, LLP

Milwaukee, WI · 53202

414-277-5640

Keith H Orum

Reg. 33985

Patent attorney

ORUM

Elroy, WI · 53929

312-543-1492

John M Osmanski

Reg. 75023

Patent attorney

Theorem Law, LLC

Milwaukee, WI · 53203

262-404-7026

Jonathan M. Pacocha

Reg. 84432

Patent agent

Michael Best & Friedrich LLP

Milwaukee, WI · 53202

414-271-6560

Akshaya K Padhi

Reg. 63164

Patent agent

Madison, WI · 53719

608-698-9097

Paul M Page

Reg. 56576

Patent attorney

Paul Page Law, LLC

Madison, WI · 53701

608-438-1715

Kathleen M Pagel

Reg. 66026

Patent attorney

Foley & Lardner LLP

Milwaukee, WI · 53202

414-297-2777

Marianne Flood Paker

Reg. 65819

Patent agent

Paker Technical Consulting, LLC

Madison, WI · 53705

608-347-0347

Brandon J. Pakkebier

Reg. 77793

Patent attorney

Experimental Aircraft Association

Oshkosh, WI · 54902

920-426-6165

Derek G. Palecek

Reg. 78544

Patent agent

Northwestern Mutual

Franklin, WI · 53132

414-661-7457

Jonathan M. Paliwal

Reg. 74040

Patent attorney

Madison, WI · 53704

608-692-5435

Todd E Palmer

Reg. 44278

Patent attorney

Michael Best & Friedrich LLP

Madison, WI · 53703

608-257-3501

William C. Paltz

Reg. 78771

Patent agent

Foley & Lardner LLP

Milwaukee, WI · 53202-5306

414-297-5104

Thomas M Parker

Reg. 42063

Patent attorney

Fitchburg, WI · 53711

608-469-7805

Christine E Parsons

Reg. 51457

Patent attorney

Bemis Company, Inc.

Neenah, WI · 54957

920-527-7970

Rajul S Patel

Reg. 75874

Patent attorney

Foley & Lardner

Milwaukee, WI · 53202-5306

414-319-7346

Jason E Pauls

Reg. 45651

Patent attorney

Quad/Graphics, Inc.

Sussex, WI · 53089-2827

414-566-4408

Carly A. Paveglio

Reg. 83681

Patent agent

Quarles & Brady LLP

Milwaukee, WI · 53202

414-277-3048

Aude S. Peden

Reg. 78009

Patent attorney

Foley and Lardner, LLP

Madison, WI · 53703-1482

608-258-4278

Benjamin J. Peirce

Reg. 60481

Patent attorney

Voltage IP Group

Wauwatosa, WI · 53213

414-699-3074

David R Pekarek Krohn

Reg. 69443

Patent attorney

Perkins Coie LLP

Madison, WI · 53703

608-663-7496

Robyn M. Perrin

Reg. 65619

Patent agent

Registered Patent Agent

Madison, WI · 53711

608-345-1862

Jeffrey David Peterson

Reg. 49038

Patent attorney

Michael Best and Friedrich LLP

Madison, WI · 53701

608-257-3501

Common questions

Do I need a patent attorney based in Wisconsin?

No. Every USPTO-registered patent practitioner is licensed to file applications on behalf of inventors in any state, regardless of where the practitioner's office is. Choosing a Wisconsin-based practitioner can simplify in-person inventor signings, local meetings, and same-time-zone calls, but it is not a legal requirement.

How many patent attorneys are licensed in Wisconsin?

724 active USPTO-registered patent practitioners list a Wisconsin office address on the OEDCI roster. This includes both patent attorneys (who can also offer legal advice) and patent agents (who can prepare and file patents but not offer broader legal advice).

What is the difference between a patent attorney and a patent agent?

Both pass the USPTO Patent Bar and can prepare, file, and prosecute patent applications. Only patent attorneys also hold a state bar license, meaning they can additionally offer legal advice on infringement, licensing, and litigation strategy. Patent agents tend to charge less per hour and are common at large in-house IP departments.